Newpol Mini Aquarium Algae Cleaning Magnet for Small Glass Fish Tank
★ Strong Magnetic Material: Use high quality magnet, suitable for 0.1~0.2 inch thickness glass fish tank. Not for Acrylic or Plastic Fish Tank. ★ Mini Size: Approx. 3.6* 2.7 cm/ 1.4x 1 inches (Diameter*Thickness), round shape design plus the mini size, good cleaning effections. ★ Scratch Protection: Magnetic brush use soft brush materials, no worry about scratch your tank glass. To get best cleaning effection, please move the magnetic slowly and gently while cleaning, quick move could make the brush fall out.